1/4" Diameter Alloy Steel Long (6XD-8XD): 1-1/2" LOC and Below. Here are the recommended End Mills as well as Speeds and Feeds for the Optimized Tool Path (like a VoluMill, DynamicMill or iMachining) in Alloy Steels like 4140, 4340 or 8620:
1/4" Diameter x 1-1/4" Length of Cut x 5 Flute Alcrona Pro Coated Variable Pitch End Mill
1/4" Diameter x 1-1/2" Length of Cut x 5 Flute Alcrona Pro Coated Variable Pitch End Mill
| Axial DOC |
1-1/2" and Below |
| Radial DOC |
.015" |
| SFM |
500 |
| RPM |
7,640 |
| CLPT |
.0015" |
| IPM |
57.3 |
| Metal Removal Rate |
1.28 |
*Do not use these Speeds/Feeds if you are not running an Optimized Tool Path
